London Metal Exchange provides information relating to the LME's third largest traded contract. Settlement prices, opening stocks and the forward price curve for Zinc are available.
http://www.lme.co.uk/zinc.asp

International Lead and Zinc Study Group provides a wide variety of lead and zinc statistics.
http://www.ilzsg.org/ilzsgframe.htm

The System for Electronic Disclosure by Insiders (SEDI) facilitates the filing and public dissemination of "insider reports" in electronic format via the Internet.
https://www.sedi.ca/

The System for Electronic Document Analysis and Retrieval (SEDAR) is an online resource where investors and other authorized users can find and retrieve public company and investment fund profiles and SEDAR public securities filings and information from the SEDAR filing system, together with the latest news about SEDAR.
http://www.sedar.com/